Re: gEDA-user: background color and PNG out

[John Griessen <john_g@cibolo.com>]

On Friday 30 August 2002 12:19 pm, EATON,JOHN (HP-Vancouver,ex1) wrote:
> Vectors? They made sense when pen plotters used actual pens
They still make plenty of sense to all 3D modeling software.  Bezier curves 
and surfaces in 2 or 3 dimensions define volumes with low data intensity and 
high fidelity to smooth blended surfaces.   Some are beginning to incorporate 
texture and translucence and reflectivity into the surface models.  Any one 
view with light effects reduces to a .png output

In that scheme of things, a mask for circuit making is a 2D minimal vector 
model which could be integrated into a full 3D model with material properties 
included, and process dependent edge shape changes included.

2D design doesn't allow complete cross checking of a specification.  3D rule 
checking will allow catching mistakes early in the full electromachanical 
product design flow.    Standards that appeal to a broad community rather 
than just the circuit board folks have a big benefit.

John Griessen